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Set the "sweet spot" for PowerSDR's click-tune After a few minutes of operating this way you will see the advantage and how it reduces confusion. Rather you can select any station on the fldigi waterfall just by clicking on it and you won't have to retune the rig. If you are a veteran RTTY op you will find that running digital modes with fldigi is a bit of a departure because it doesn't use a fixed offset. It also is meaningless in other modes, like PSK. Since fldigi does not adhere to a strict offset of 2125 Hz for the mark tone in RTTY, the offset will just confuse things. If you do it will cause the frequency display on the waterfall in fldigi to be incorrect. #Virtual audio cable 4.09 serial#Fldigi will use a CAT command to key and unkey the Flex rather than RTS or DTR on a separate serial port.Īlso, do not enable either of the RTTY offsets. That is for hardware PTT using a separate serial port. I specify them here just to make sure that no one is confused by an omission.)ĭo not check the box "Enable PTT". (Note: with a virtual serial port baud rate, parity, and number of stop bits really has no meaning. Port COM6 Baud 57600 Parity none Data 8 Stop 1Īfter you have set the above values, check the "Enable CAT" box.Ĭlick the "Apply" button at the bottom of the frame. With PowerSDR running, click on "Setup", select the "Audio", and then the "VAC" tabs to display the VAC setup page. Setting up the port-pair is nothing more than selecting the desired values for End 1 and End 2, COM6 and COM7 in this case, and clicking the "Create Pair" button. ![]() Therefore, creating a port-pair where both COM numbers are below 10 means that the configuration may be used later on to communicate with these other programs. WSJT and WSPR, have problems with port numbers above 9. Most of the examples use COM6/COM16 or COM7/COM17 but I discovered that some programs, e.g. In my case I created port pair COM6/COM7 for communications between PowerSDR and fldigi. It is possible for virtual ports to conflict with physical ports if the physical ports are added later. Make sure that your virtual port pair starts above any possible physical serial port numbers. It will show you your physical serial ports and offer to create a virtual port pair. Both rig control and PTT will be handled by this single port-pair. VSPmgr configurationįor now you will create a single port-pair that will be used for CAT control of fldigi by PowerSDR. Once you click the Restart button you should see cable 1 and cable 2 appear in the lower section of the Virtual Audio Cable Control Panel (if not sooner). 2 Max inst 20 Ms per int 7 Stream fmt "Cable Range" Volume control ( unchecked ) Connected source lines "line" Clock corr % 100. If you want to check, here is what I have all the VAC parameters set for: In the upper left hand corner of the control panel for VAC you want to set it for 2 cables. Look for the "Virtual Audio Cable" menu item and then select Control panel. You get to the VAC control panel from the Windows "Start" button under "All Programs". Open the VAC control program Control Panel and configure VAC. You MUST NOT use the demo version! Go ahead and buy it. Note: you MUST use the purchased version of VAC 4.09. #Virtual audio cable 4.09 how to#There are some differences between installing with XP, Vista, and Win7 so be sure you read the instructions, most notably in how to deal with unsigned drivers in Vista and Win7. #Virtual audio cable 4.09 install#Install VACįollow the instructions provided with VAC. Make sure that PowerSDR both transmits and receives. #Virtual audio cable 4.09 driver#(The new driver may automatically track the settings in PowerSDR. Make sure that the sample rate and buffer size (Setup→Audio→Primary) match the driver. Install PowerSDRĪgain, I assume you are installing the release version and it is compatible with the driver you have installed. ![]() I use a buffer size of 2048 and a sample rate of 96 ksps. For the purposes of these instructions you should assume that you are installing the latest released version of the driver. I am not going to address which one because it depends on which version of PowerSDR you are running. The PowerSDR rig description XML file for fldigi's RigCAT. #Virtual audio cable 4.09 software#Installationĭownload all the software pieces you need.įldigi, either an alpha version or a release version. Please email us with any changes needed for more recent versions, or add the information to this page. These instructions have been tested on Windows XP. ![]()
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